o4' silverado getting service brakes light

[ukd73]

I am getting a service brakes light while using diablo tune. put the orig. tune in no light. when I turn the truck off then restart the lights are not there until I drive about 5 miles the it comes back on. Ihave tried the factory hp tune same deal. I thinik this all started when I changed my tire height to 35". any clues
mke

[ukd73]

I am at work until 4pm central then I will check back

[jess]

i have the same problem with mine and so does my friend

[jess]

No one has any ideas? i tried re installing with a different tire size and triple checked the correct fuses and my 04 silverado has the service brakes and ABS lights on. Odd thing is my 04 GMC with another predator programmer dosent have any lights on.

[gregs]

i had problems getting my tire size right using the predator. i would enter a size and the speedometer would be way off. I ended up playing around with the settings and using a gps to check the speedo and thats the only way i could get it to work. i ended up with some weird setting but whatever as long as it worked out in the end i guess its all good